Merge pull request AElfProject#2260 from AElfProject/improve-cases

Improve unit cases

Merge pull request AElfProject#2209 from AElfProject/enhancement/auth…

…ority-validation

Improve authority validation for genesis contract.

Merge pull request AElfProject#2181 from AElfProject/fix/random

Remove cache from consensus contract

Merge pull request AElfProject#2165 from AElfProject/update-docs

Update docs & docker file to dotnet core 3.0

Merge pull request AElfProject#1982 from AElfProject/test2.0x

Refactor crossChainTest and improve crossChain-multiToken-tests

Merge pull request AElfProject#2070 from AElfProject/docs-fix-pages

Docs fix pages

Merge pull request AElfProject#1774 from AElfProject/commit-reveal

Random Number Provider Contract Standard - ACS6

Merge pull request AElfProject#1948 from AElfProject/change-protobuf-…

…csharp-namespace

Change some csharp_namespace of protobuf

Merge pull request AElfProject#1903 from AElfProject/improve/genpackage

Gen package on build for AElf.CrossChain.Communication

Merge pull request AElfProject#1705 from AElfProject/fix/economic-system

Fix economic system bugs.